Reverse Osmosis Systems

The following types of Dutch Mill Reverse Osmosis systems have been tested with satisfactory results in accordance with the relevant requirements of the LR Type Approval System: Dutch Mill RO 1100 / RO 1200 / RO 10-30 / RO 30-80

Lloyd's Register type approved

Main principles for Dutch Mill Reverse Osmosis Units

Osmosis is the diffusion of two miscible solutions through a semi permeable membrane in such a manner as to equalize their concentration, by allowing a lesser concentration potable water to naturally diffuse through a semi permeable membrane into a higher concentration sea or brackish water. Therefore, seawater or brackish water cannot naturally diffuse through a semi permeable membrane to provide potable water.
To solve this problem, Drema Waterbehandeling B.V. has introduced Reverse Osmosis Units, which overcomes this natural phenomenon.
By forcing sea or brackish water (under high pressure) through a semi permeable membrane, potable water can be produced.

Reverse Osmosis Units are marketed under the Dutch Mill trade name. Dutch Mill Reverse Osmosis Units are particularly designed for long life and low maintenance costs and are manufactured from the highest quality components available

The Reverse Osmosis Units are designed for the shipbuilding industry and they are especially suitable in larger yachts, oil platforms, cargo boats, cruise ships, tankers, cattle ships and fishing vessels. Using the latest technology, Drema Waterbehandeling B.V. have designed the units in such a way as to reduce the need for the addition of chemicals, always providing for the quality of the feed water.

The Installation contains:

  • Stainless steel frame and construction, to eliminate the problems caused by corrosion
  • Sand filter
  • Pre-filter
  • Unique computerised steering design
  • Automatic fresh water flush after each stop and per 24 hours standby intervals
  • One push button starts up the Reverse Osmosis Unit
  • LED indicators showing either high rate or low rate system pressure indicating impure water production
  • Digital freshwater quality display
  • Volts free alarm contacts
  • Pumps are made of bronze or stainless steel
  • Local high pressure piping in stainless steel 316 or better


Advantages of Dutch Mill Reverse Osmosis Units

  • No heating energy required
  • Single push button starts computerised system
  • Simple to operate
  • High reliability of the components
  • Simple maintenance

Accessories Dutch Mill Reverse Osmosis Units

  • Fully automatic as against semi-automatic
  • Energy recovery
Reverse osmosis system RO-1200  
Dutch Mill 1200
 
Dutch Mill 10-30


Types Dutch Mill Reverse Osmosis Units

Drema Waterbehandeling B.V. can supply units ranging from 3000 to 100.000 litres of potable water per day.
The standard Reverse Osmosis Units are given in the table below.

Type
Capacity
(m3/24h)
Heigth
(mm)
Depth
(mm)
Width
(mm)
Weight
(kg)
Ro 1100
3 - 4.5
500
500
1300
100
Ro 1200
5 - 7.5
500
650
1300
120
Ro 10-30
10
1500
850
1750
800
Ro 10-30
15
1500
850
1750
800
Ro 10-30
20
1750
850
1750
950
Ro 10-30
30
1750
850
1750
950
Ro 30-80
30
1900
1000
2800
1050
Ro 30-80
50
1900
1000
2800
1250
Ro 30-80
70
1900
1000
2800
1250
Ro 30-80
80
1900
1000
2800
1400

 

We can also produce a tailor-made Reverse Osmosis Unit to your own specification and can also provide you with land market Reverse Osmosis Units according to your specifications.